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by Strilanc 79 days ago
Yes, that would be a concern. You could require a proof of work to submit a precommitment, so that DoSing was at least expensive to do. You could have some sort of deposit mechanism, where a precommitment would lock down 0.1 bitcoins (from a quantum-secure wallet) until the precommitment was used. I admit I'm glad I don't have to figure out those details.